.transfer {
    display: flex;
}
.transfer p {
    font-size: 14px;
    line-height: 36px;
    padding: 0 8px;
    border-radius: 4px;
    color: #666;
    background-color: #f5f5f5;
}
.transfer p:hover {
    color: #1989fa;
    background-color: #eee;
}
.transfer p span {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.transferLeft, .transferRight {
    position: relative;
    flex: 1;
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 8px;
    height: 540px;
    box-sizing: border-box;
    overflow: auto;
}
.transferLeft::-webkit-scrollbar, .transferRight::-webkit-scrollbar {
    display: block;
    width: 6px;
    height: 6px;
}
.transferLeft::-webkit-scrollbar-thumb, .transferRight::-webkit-scrollbar-thumb {
    background-color: #ddd;
    border-radius: 6px;
}
.transferLeft > span, .transferRight > span {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    font-size: 14px;
    color: #999;
}
.transferLeft {
    margin-right: 12px;
}
.transferRight {
    margin-left: 12px;
}
.transferRight p {
    display: flex;
    align-items: center;
    cursor: pointer;
}
.transferRight p[data-placeholder] {
    justify-content: center;
    background-color: #f5f5f5;
    opacity: 0.8;
    color: #333;
}
.transferLeft p + p, .transferRight p + p {
    margin-top: 4px;
}
.transferRight p img {
    flex: none;
    display: block;
    width: 20px;
    height: 20px;
    margin-left: auto;
}
.transferCenter {
    display: flex;
    align-self: center;
}
.transferCenter > div {
    padding: 8px;
    border-radius: 4px;
    cursor: pointer;
    border: 1px solid #ddd;
}
.transferCenter > div:hover {
    background: #ebeef5;
}
.transferCenter > div + div {
    margin-left: 8px;
}
.transferCenter > div img {
    display: block;
    width: 16px;
    height: 16px;
}